【Self-sensing, foam in 0.25 seconds】The automatic soap dispenser has a high-precision sensor, the infrared sensor of the soap dispenser has a response of about 0.25 seconds, and the area scanning distance is about 3 cm. Touchless soap dispenser nozzle design, just place your hands under the nozzle, the soap bubbles will flow out effortlessly, more child friendly than traditional soap dispensers. 【320 Capacity 【Open Water Tank】The foam auto soap dispenser has a large 320ml visualized water tank that clearly shows when you need to refill soap. Note: Please do not exceed the inner wall of the water tank, it is recommended to add 90% soap solution. 【USB charging, IPX4 waterproof】The automatic soap dispenser has a a built-in 1500mAh lithium battery, USB charging, TYPE-C power supply interface and can be used for 3 months on a single charge, this foam soap dispenser has an IP4 waterproof rating. to prevent soap and water from entering the corrosive circuit board and battery. Note: The